Boiler.



I Il IHH M. KELLY.

BOILER.

APPLInArIoN FILED l001231, 190e.

' Patented May 4, 1909.

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MICHAEL KELLY, OF BUFFALO, NEW YORK.

IBOILER.

Specification of Letters Patent.

Patented May 4, 1909.

Application filed October 31, 1908. Serial No. 460,486.

To all whom it 'may concer/nf:

Be it known that l, MICHAEL KELLY, a citizen of the United States, residing at Buffalo, in the county of Erie and State of New York, have invented a new and useful lmprovement in Boilers, of which the following is a specification.

The object of this invention is to provide a water heater or steam boiler which enables a greater heating effect of the fuel to be obtained for rapidly and economically heating the water or producing steam.

In the accompanying drawings: Figure l is a vertical transverse section of a boiler embodying my invention. Fig. 2 is a vertical longitudinal section in the correspondingly numbered line in Fig. 1. Fi 3 is a vertical transverse section, on an en arged scale, of one of the legs of the boiler. Fig. 4 is a horizontal section thereof in line 4-4, Fig. 3.

Similar letters of reference indicate corresponding parts throughout the several views.

The general construction of the boiler shown in the drawings for illustrating my invention consists of a brick shell A, a grate B arranged in the lower part of this shell above an ash pit b therein and a plurality of hollow arch-sha ed water sections arranged in a longitudina row within the upper part of the shell and each having a pair of upright legs C arranged on opposite sides of the grate and a head D connecting the upper ends of the legs. The several sections together form the furnace or fire place of the boiler above the grate and the same are in communication, so that the water can pass from one to the other.

On the inner side of each leg the same is provided with a hollow inwardly bulging part or extension E which communicates with the interior of the leg. The central or salient part of this extension is provided with a vertical row of corrugations e each of which extends in a horizontal direction. These extensions on the legs of the water sections project inwardly into the furnace or fire place and over the grate, whereby the heat rising from the burning fuel on the latter acts more effectively on the water in the boiler sections. lnasmuch as the salient portions of the extensions on the sections are exposed more directly to the heat of the furnace than its receding dportions, the same are liable to expand an contract unevenly but this is permitted by reason of the corrugations on the salient parts thereof. ln addition to allowing for expansion and contraction on the salient part of the extension, thc corrugations also increase the heating area of the same, thereby enabling the water to be heated and the steam to be generated more rapidly.

f represents an upright diaphragm or partition arranged in each extension and eX- tending from side to side thereof, as shown in Fig. 4, but terminating at its upper' and lower ends short ofthe top and bottom of the extension. This part separates a part of the water in the extension almost wholly from the water in 'the leg and confines the same in contact with the corrugated salient part of the extension, whereby this water becomes quickly heated. As the hot water rises, it asses from the bay or cut-off space within t e extension over the to ofthe partition f into the main part of the eg and water of lower temperature passes underneath the partition into the cut-off space. By this means the heat is applied more directly to a small part of the water at a time, whereby the temperature of the same is raised more rapidly and steam is generated more quickly.

In order to further increase the heating effect of-the fire on the body of Water confined in the extension, an upright tube or flue G is provided. This flue is arranged in the extension between the salient part of the same and the partition and opens at its upper and lower ends through the top and bottom of the extension, as shown in Fig. 3.

As the heat of the furnace passes upwardlyl through the flue G the water surrounding the same in the extension is rapidly heated and caused to circulate quickly. To permit the flue to expand and contract freely, so that it can adapt itself to changes in temperature and also to increase the heating area of the same, this flue is provided with circumferential corrugations g extending hroughout the length thereof, as shown in My improved construction of boiler or heater causes the heat of the furnace to act more promptly and effectively on the water before the heat escapes, thereby utilizing the fuel to a greater advantage and enabling the boiler to be of service in less time than has been ossible heretofore,

I c aim as my invention:

l. A boiler having an upright water leg which is provided with a laterally projecting emilyprojecting hollow extension, an upright partition arranged within said extension and terminating at its upper and lower f ends short of the top and bottom of said eX- tension, and an upright flue arranged in said Aextension between the salient part .thereof and said partition and opening at its upper and lower ends lthrough the top and bottom of the extension, the salient part of said extension having horizontal oorrugations and hollow extension and an upright Yflue .arranged in said extension and opening at its upper and lower ends through the top and bottom of said extensions.

2. A boiler having an upright water leg which .is `provided on 4its inner side with .a laterally-projecting hollow extension, an upright partition arranged within said eXtenl sion and terminating at its upper and lower i ends short of the top and bottom ofsaid eX- i tensionJ and an upright illue arranged in said flue having circumferential oorrugations. said extension between .the .salient part g Witness my vhand this 17th day of Octothereof and said .partition and opening at .its l ber, 1908. upper .and :lower ends .through the top Iand l MICHAEL KELLY. bottom of the extension. Y 3. A boiler having Van .upright water leg i which is `provided .onits :inner side with a `latl mitnesses:

THEO. L. POPP, ANNA Harrods. 

